Area Forecast Discussion
Issued by NWS Houston/Galveston, TX

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000
FXUS64 KHGX 260448
AFDHGX

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
1148 PM CDT SAT APR 25 2015

.AVIATION...
TEMP/DEWPOINT SPREADS ARE NARROWING ACROSS THE REGION SO WOULD
ANTICIPATE SOME PATCHY FOG TO BEGIN DEVELOPING IN THE NEXT COUPLE
HOURS. STILL ANTICIPATE IMPROVING CONDITIONS MID MORNING FORWARD
AND MAINLY VFR CONDITIONS THEREAFTER. ONE SLIGHT EXCEPTION WE`LL
BE KEEPING AN EYE ON (AND PROBABLY WON`T MAKE MUCH DIFFERENCE
AVIATION-WISE) IS THAT SOME OF THE HIGHER RES MODELS DEPICTING
THIN BAND OF --SHRA MOVING INLAND FROM THE COAST 14-18Z. 47

&&

.PREV DISCUSSION... /ISSUED 1025 PM CDT SAT APR 25 2015/
THE NEXT 24 HOURS IS FORECAST TO BE RELATIVELY QUIET WITH A
RETURN TO AN ACTIVE WEATHER PATTERN MONDAY. THE MAIN WEATHER STORY
FOR THE OVERNIGHT HOURS WILL BE THE FORMATION OF AREAWIDE PATCHY
FOG. A LIGHT WIND FIELD AND DEW POINT DEPRESSIONS FALLING TO UNDER
THREE DEGREES SHOULD HAVE MANY MORE RURAL OPEN EXPANSES
EXPERIENCING EARLY SUNDAY MORNING FOG. WATER VAPOR IMAGERY THAT
PROVERBIAL `PICTURE THAT SPEAKS A THOUSAND WORDS` AS A CURRENT
SWATH OF DRY AIR SWEEPS THROUGH SUNDAY MORNING...WITH THE IMPETUS
OF MONDAY`S INCLEMENT WEATHER THAT OF A LARGE UPPER LOW DIVING
SOUTH ACROSS THE SOUTHERN SIERRA NEVADA SPINE AND ENTERING WESTERN
ARIZONA TONIGHT. PER LOCAL RAOB DATA...GENERALLY DRY AND CAPPED
SOUNDINGS AS REGION WILL REMAIN UNDER WEAK MID-UPPER RIDGING AND
MID-UPPER WESTERLY FLOW THAT EQUATES TO PARTIALLY CLOUDY SKIES
THROUGH EARLY MONDAY MORNING. SLIGHT CHANCE POPS IN PLACE TOMORROW
TO COVER THAT UNCERTAINTY OF AN ISOLATED AREA OF CONVECTION THAT
COULD FORM IN RESPONSE TO A QUICK HITTER SHORTWAVE DISTURBANCE
EMBEDDED WITHIN THE SLOWLY BACKING MID-UPPER STEERING WEST-TO-
SOUTHWESTERLIES. THE LARGE UPPER LOW WILL BE ENTERING THE WESTERN
(PANHANDLE) TEXAS MONDAY... OPENING UP THE UPPER FLOW PATTERN AND
ALLOWING A SERIES OF HIGHER PVA TO RIDE INTO AN INCREASINGLY MORE
SATURATED AND UNSTABLE MONDAY ENVIRONMENT. WIDESPREAD RAIN AND
THUNDERSTORM ACTIVITY FORMING AHEAD OF AN APPROACHING COLD FRONTAL
BOUNDARY SHOULD IMPACT THE AREA DURING THE DAY MONDAY. 31

&&

.PRELIMINARY POINT TEMPS/POPS...
COLLEGE STATION (CLL)      68  86  71  83  62 /  10  20  40  60  40
HOUSTON (IAH)              69  88  72  83  66 /  10  20  20  60  50
GALVESTON (GLS)            73  78  75  81  69 /  10  20  20  50  30

&&

.HGX WATCHES/WARNINGS/ADVISORIES...
TX...NONE.
GM...NONE.

&&

$$



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